Electric water-heater.



H. K. CLOVER.

ELECTRIC WATER HEATER.

APPLICATION FILER .IAY23. 19H.

Patented Jan. 8, 1918.

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i the faucet and above the dischar UNITED STATES PATENT OFFICE.

HOWARD CLOY 'ER, 0! LOS ANGELES, CALIFORNIA. ASSIGII'OE T6 ELECTRICALPRODUCTS CORPORATION, OF WILMINGTON, DELAWARE, A CORPORATION ornnnawaaa.

To all whom it may concern:

Be it known that I, Howann K; CLovaR, a citizen of the United Statesresiding at Los Angeles, in the county of lies Angeles and State ofCalifornia, have invented new and useful Improvements in Electric Water-Heaters, of which the following is a specification.

This invention relates to electric water 10 heaters and it has for itsobject to provide an improved electric water heater whereby a st'ream'orjet of water may be heated as 'it passes through and issues from theheater. 'In the referred embodiment of the inven- 1E tion, a aucet-likebody having valve means to control the flow of fluid therethrough and aninternal resistance element is rovided; in" accordanoewith the inventiont e resistance element which is disposed in the water :0 assage in thefaucet body may be removed or replacement and repair, together withother, electrical features, b properly manipulating the valve-controlingstem whereby adjustment of the valve to control the flow of liquid ismade; and furthermore the valve or as may remain on its's'eat topreventtlie flow of fluid while the valve stein and resistance element aredibnnected or removed. In the form of the invention shown in the drawingthe valve means'is shown as a rotatable cock havingits operating'stemdetachablysecured thereto as by a bayonet joint, the resistance elementbeing shown as disposed in the faucet body an surrounding the valve 0rating stem and it: position to be remove when the stem is detached fromthe cock. To this end, theresistance element is sup orted by or mountedon a water passage 0 osure at the top of opening thereof, thevalve-operating stem 'ng provided with a out or wrench portion wherebythecl'dsure muylbtunscrewed from the body portion' after detachment ofthe valve-operat' contro ling switch to control the flow of electricalenergy through the resistance elenient is mounted pzeferably attheclosure .and is removable therewith, the switch blade 0 or blades beingconnected with the valveo rating stem so that upon rotation of such nbymeans of a hand wheel or the like the I plug cock will first be moved toopen position to ermit'the flow of fluid, ordinarily at supplie underpressure o he device, and

Specification of Letters Patent.

stem from the cock. An electrical ELEc'rmc WATER-HEATER;

Patented J an. 8, 1918: I

Application lied Kay 28, 1917. serial No. 170,389.

then ,the switch blade or blades will be caused to contact, with fixedcontactsofthe switch whereupon the resistance element Wlll beenergizedandthe flowing liquid heated as it passes over such resistance ele- 6,0ment. After the desired quantity of liquid so heated has been dischargedby the heater the hand wheel may be further turned in its properdirection of rotation to first cause a the breaking of the circuit bymoving the switch blade or blades and then upon continued rotation ofthe hand wheel 'move' the cook or plug thereof to closed position, thusshuttmg cit the'further flow of fluid. A suitable switch casingsurmounts the faucet hke body so that a sealed-in or moisture-proofswitch box is had. A coil compression spring is preferably arrangedbetween the'switch bo'x cover and'the hand wheel todraw the valveoperating stem outwardly and maintain the same in blage with the cock orplug at the bayonet 0ml: thereof.

A further object of the invention is to provide a device of thecharacter disclosed which will be relatively simple and inex-- pensivein construction and organization .when its features of superiority suchas its adaptability to varying workin conditions and llity indisassembling or, purposes of air are considered.

- 1th the above and other objects in view,

the invention'c'onsists in the novel and useful provision, formation,combination,. and

relative arrangement of parts, members and on the linef-az', Fig. 1, andlooking in the i direction cfthe appended arrows.

Correspoudi parts in both the fi use are designated y the same referenceStaractors.

Referring with particularity to the draw- 106 ing, in the embodiinentfofthe invention therein shown, A designates a faucet casing,

B designates valve means therein, C designates valveperating means, Ddesignates electrical heat ng m ans. E des g ates switch 110 means tocontrol the supply of electrical energy to the heating means D, and Fdesignates means for supplying electrical 1 energy. v 5 The casin A-isshown as comp-rising a nipple 7 leading from any suitable source of,fluid supply. At its end opposite the valve seatfi the tubular body 3is internally threadcd as at- 8 to receive a closure 9 which clofIs'nreis threaded as at 9 for engagement with i the threaded portion 8of the body 3 and cqm'prises a'switch casing provided with an 'arlnularchannel 10 at its base 10, which channel'lO defines a boss 10".

The'valv'e means B is shown as a rotatable coir'ical'one' way plug cock12 seated against 'thedalve'seat 5 and provided with an internal fluidassage 13, which passage extends from-tiie' lower end of the plug 12 to'sizai'point at one side of said plug 12 as at 14 so hat communicationmay be established between the i fluid supply pipe 7 which islirea'dedginto the body 3 and throu h a "lbiishin'g 15 .and} the hollowinterior 0 the bodye, a duct 16 being provided in the valve "seat '5to'th'at'end.

-The valve-operating means C preferably comprises a rotatable valve stem17, and a "="='--'harifl-wheel or the like 18 secured thereto andexternally of the body 3. The valve stem 17 f at: its'lower end isprovided with a lateral --l ng or projection 19 which is adapted to takeinto an angl d slot 20 ro vided in the upper endof the pnig 12 sue plug12 being bored flat its upper end to receive the lug-carrying ndof thevalve-o eratin stem 17. The an- -gIe(l.-slot extends lbngitu inally oftheplug from the upper end thereof as at 20, then -transversely or--cireumferentially of the as' plug as-at 20! and then upwardly a shortdistance'as at 20 sothat a bayonet joint as between the plug 12 and thevalve-operating stem j l'i is provided The switch casing 9is"prcferablyiannular in form and has a ren'mvable cover 12 betweenwhich cover and the hand wheel a compression spring 21 is 3.i!iterp'osed. This compression spring 21-by draxviug upwardly or outwarly on the vaIve-opeauing stem maintains the stem 17 and plug 12 inassemblage so that upon ro- .-.t:|tion of the hand wheel the plug willbe ro- -;t .:h|tod to permit the discharge of fluid from the device orshut off such discharge of fluid. The closure 9 is bored as at 9' toaccommo- 0 date the stem 17 and a packing 9" is provided in anenlargement of the bore 9 to revent ---tl|c invasion of the switch boxby fluid from .the' interior of the body or to prevent thecscape of suchfluid. Just below the packlng e 9" the bor 9 is squared as at 9 so thata nut or wrench portion 17 provided on the stem 17 may be caused toengage the closure 9 after detachment of the valve-operating stem 17 andthe plug 13 so that by first permitting upward movement of the handwheel 18 under the influence of the spring 21 or by manually raisingsuch hand wheel, the closure may be unscrewed upon rotation of the handwheel, it being understood that the nut portion 17 by entering thesquared portion 9 of the bore 9' will engage the closure 9.

The electrical heating means D is shown as comprising a coil 22 ofresistance wire which is secured to binding posts 9 and 9 passingthrough the closure 9 and 'is supported thereby, insulation bushings 23bemg provided, from which point of support the ends of the element areconnected through the switch box forming the closure 9, one to asuitable contact 24 in the switch box and the other out of the switchbox for connection with a circuit wire f of the electrical supply meansF. The other circuit wire f of the supply means F is connectedwith'another contact 25 within the switch box 9. These contacts 24 and25 are included within the switch means E, which means E preferablycomprises in addition thereto a curved connection bar 26 yieldinglyrotatably mounted in connection with the'stem 17- by suitable mechanism27 which may be of standard form such as is ordinarily employed in orincorporated in a snap switch of the Trumbull type, all as will bereadily understood by those skilled in the art. The fixed switch points24 and 25 are so arrangedin the casing 9 that the flow of electricalenergy through the switch bar 26 and consequently through the resistanceelement or coil 22 is permitted only after suflicient rotation of'thchand wheel to open the plug cock and permit the flow of fluid throughthe-body 3 and over the resistance coil 22 disposed therein. After thedesired amount of heated fluid has been discharged through the heater aslight further rotation of the hand wheel'will cause the switch bar 26to leave the points 24 and 25, thus interrupting the supp1y.0felectrical energy to the resistance coil and permitting the flow of coldfluid until the continued rotation of the hand wheel, through rotation'of the plug 12, shuts off the supply of fluid altogether. It will beunderstood that each succeeding demand for heated fluid is to be met bymerely rotating the hand wheel as just described. If itis desired todischarge only cold fluid through the heater the hand wheel may berotated to assume the position required to discharge cold fluid and neednot be rotated far 'enough to bring the switch bar 26 across the points24 and 2. An insu'lation lining 28 may be provided inte- .rioi'ly of thebody 3 to prevent contact of the resistance coil 22 therewith.

closure or switch casing me of the slot in the To replace or repair theresistance coil or switch features a 1- that is necessa is to pressdownwardly or inwardly, on t e to tatable hand grip or wheel 18 so thatthe lug of the bayonet joint may be moved down-' wardlyand then rotatedthrough the hand wheel to bring :such in into the portion 20 ug 12whereupon the valve-operating stem 17 with its lug 19 may be raised,either by the spring 21 or manu- ,ally to bring the nut portion 17!gagement with .the closure-'9 whereupon such be unmrewed' from the bodyportion? an u in removal ofathe closure or switch casing. eresistancecoil 22 and the switch box and attendant features ma be liftedclear of the casing 3 with the va ve-operating stem 17. The demay beagain assembled after replacement on repair of the resistance element orother featuresby again replacing the closure or switch casing 9 and byopposite rotation of the hand wheel 18 to thread the closure "9 intolace in the body 3. After the closure 9'has n so threaded into place thehand wheel may be depressed or moved'against its-spring 21 to cause thelug 19 on the stem 17 to again enter the slot 20 and engage the plug 12after which engagement the sprin 21 willniaintain the hand wheelin'extende position so that the plug ma be rotated upon rotation of thehand whee and stem 17.

A suitable supporting base ma be provided for the body 3, such baseshown as a supporting-flange 29 secured to 510 body 3 by means o asetscrew 30.

Access may be had'to the interior of the 'switch casing by removing thecover'12',

snap switch, the lag of the switch before g trical jsner'gy claim-andesire to secure by after firstremoving' the hand wheel 18 and thespring 21.

The switch of the type known as a makm or breaking ,the circuit mayutilized to insure the sugply, first of fluid to' be heated, and then esupply of electrical energy, and the cutting o of the elecfl and thenthe cutting of of the fluid, thus preventing the'heati'ng of theresistance element while no 'fluid is flowing over the same.

Havi

invention, I tters'Patent.:

' 1. In an electric heater acasing having a discharge opening, aggva veto control the .flow of fluid through said casing; means for operatingsaid valve, electric heating means casing, and means 'to control thethus disclosed in in said I supply of electrical energy to-said heatingmeans; said heating means being adapts for inter-engagemen with saidvalve operating means whereby said heating means may be removed from thecasing upon rerfnoval of thee-valve operating means thererom. v v

2. In an electric heater, a having a.v

into ap from; there being operating .to rmit the p element and andcontrolling means removable with said stem; there being 4 val e valvestem extendin discharge ening, a valve to control the flow of fluithrough said casing, means for operating said valve, electri'c heatingmeans in said .casing, and means to control the supply of electricalenergy to a said heatin means; said heating means being adap forinter-engagement with said valve operating means whereby said heatingmeans may be removed from the casing upon remevaT of the valve operatingmeans theremeans whereby said valve tachably inter-engaged to permit there- Eoval of said va tie gperat d e casing se arate romsai V vs.

3. In a hea ier for flui of 'uid-therethrough an having a d' argeopening, a valve seated'in the casing at one end thereof tatablevalve-operating stem, an electrical resistance element in said casingand in POSP.

fluid, means forsuption to be traversed by plying electrical energy tosaid element, and controlli resistance means fol-the electrical energyso supp led; said residence,

element being removable with said .valveoperating stem.

4. In a heater, for fluids a casing adaptedto permit the passa of fluidtherethrough an having a disc ar opening, a valve seated in the casingatom end thereof, a rotatable valve-operatin stem, an electricalresistance element in said casing and in position to be traversed byfluid, means for sup- .plying electrical energy. to said resistancemeans for the elecelement, and centre trical ener soeupp ed; saidresistance element an said controll' means in part bein removable withsaid'stem.

5, n a heater for fluid v a casing adapted to rmit the passa o'f uidtherethrough and havin a arge opening, a valve seated in e at one endthereof, a rotatable valve-operatinfi stem, an electrical resistanceelement insai and in 'sition to be traversed byflui means or supplyingelectrical ener ance element, and centre electrical ener so supplied;said resistance detachable means whereby acasing adapted to saidresistg. means for the input means and said valve may be demeans fromstem and said, valve may be inter-engaged.

6. In a heater for flui a ca'eing'edapted to permit the passage ofniitherethrough, a rotatable valve seated in said a through 'said andprovided externa ing means, an electrica resistanceelenient in saidcasing and :in position to be traversed by fluid, means fonsu'pplying"electrical energy to said resistance. element, means for, 'eontmlli 11gthe supply of electrical QHBIPY' to said resistance cement; and meanswre ks-"i P e ,thereof with operat- 4.

tion in said casing; said valve stem being In testimony whereof, I haves gned my provided with means adapted to be ngziged name to thisspecification in the piesence of 10 with said resistance element 511-p'brtui two subscribing wit-news. means and said stem beingprov'i d wit5 means whereby said valve may be detachably HO WARD K. CLO VER.

engaged by said stem; there being yielding Witnesses: means whereby saiddetachable means are ALFRED H. DAEHLER,

held in engagement. Wmms s. MITCHELL 1i

